
ServerOfflineAuth
Provide password verification functionality for offline players on the server.
About this Mod
ServerOfflineAuth
Introduction
Provides password authentication for offline players on the server.
Features
- Built-in encrypted data storage
- Json and MySQL support
- Token verification password-free login
- The server-side tokens are stored in the
server_offline_auth_tokens.jsonfile under theconfig/folder.
Configuration
When ServerOfflineAuth is first started, it creates the server_offline_auth-common.toml file in the config/ directory with the following content:
#Server Offline Auth Configuration
[general]
#Login timeout (seconds), set to 0 to disable
#Range: 0 ~ 3600
loginTimeout = 30
#Salt length (log rounds). Default 10, range 4-30.
#Range: 4 ~ 30
passwordHashWorkFactor = 10
#Player data file name (only effective when storage type is json)
dataFileName = "server_offline_auth_data.json"
#Whether to send a prompt when a player joins
joinMessageEnabled = true
[storage]
#Data storage type: json or mysql
storageType = "json"
#MySQL host address
mysqlHost = "localhost"
#MySQL port
#Range: 1 ~ 65535
mysqlPort = 3306
#MySQL database name
mysqlDatabase = "ServerOfflineAuth"
#MySQL username
mysqlUsername = "root"
#MySQL password
mysqlPassword = "password"
#MySQL table name
mysqlTable = "auth_players"
#Token validity days (0 means never expires)
#Range: 0 ~ 3650
tokenExpiryDays = 3
[storage.migration]
#Set this to perform data migration (e.g., "mysql" or "json"). After successful migration, this value will be automatically cleared, and storageType will be updated.
migrateTo = ""
- If the data storage mode is JSON, a file named
server_offline_auth_data.jsonwill be created in the server root directory to store player data. - If the data storage mode is MySQL, you need to ensure that the MySQL server is properly configured and running, and that the provided connection information is correct.
Player Commands
/register <passwd> <passwd>Register/login <passwd>Login/logoutLogout
Admin Commands
/serverofflineauth admin login <player_ID>Force login/serverofflineauth admin logout <player_ID>Force logout
Requirements
Server Requirements
This mod is developed based on Minecraft Forge 1.20.1; its effectiveness on other versions has not been verified.
Precautions
This mod is in an early testing stage, with more features under development. Do not use test versions in important environments.
If you encounter bugs during use, please submit an issue on GitHub.
Contributors
Team Members: ttwlwlbb51522, ChaosException, Archiveorigin
Available Versions
How to Install ServerOfflineAuth on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.6).
Install Mod
Open the mod browser in the dashboard and search for "ServerOfflineAuth". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.6, 1.20.5, 1.20.4 (+3 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
ServerOfflineAuth server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.6). You can switch loaders with one click in the panel.
Is ServerOfflineAuth compatible with forge?
ServerOfflineAuth officially supports forge for Minecraft 1.20.6, 1.20.5, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with ServerOfflineAuth – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ServerOfflineAuth consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install ServerOfflineAuth with just one click on your server.